void main() {
	int a = 1;
	int b = -2;
	int c;

	unsigned int d = 1;
	unsigned int e = 2;
	unsigned int f;

	b = a > b;
	b = a >= b;
	b = a < b;
	b = a <= b;
	b = a == b;

	f = d > e;
	f = d >= e;
	f = d < e;
	f = d <= e;
	f = d == e;
}
